Jul 08, 2025 Johann van de Merwe, Tyre, Equipment, Parts Association (TEPA), RMI, windscreen essential structural component
TEPA - Your windscreen is much more than a piece of glass
Johann van de Merwe, Chairperson of the Tyre, Equipment, Parts Association (TEPA), says a windscreen is no longer just a pane of glass; it’s an essential structural component that plays a critical role in passenger safety. In fact, in a frontal collision, it provides up to 30% of the vehicle’s structural integrity. Without it, the cabin can collapse more easily.
Beyond providing visibility, a windscreen also ensures correct airbag deployment, protects occupants from ejection during an accident and supports the roof during rollovers. “Laminated glass, which came to the fore in the 1990s, was a turning point for windscreen quality because it doesn't shatter upon impact. Instead, the inner layer holds the fragments in place, dramatically improving crash safety,” van de Merwe says.
Thankfully, the days of basic tempered glass are behind us. Today’s windscreens include ADAS - Advanced Driver Assistance Systems – that alert the driver to hazards, maintain lane position, adapt headlights and assist with emergency braking. The windscreen has become a vital platform for these lifesaving systems. With the influx of affordable imported vehicles we can expect to see an increase in ADAS, augmented reality HUDs (head-up displays), biometric sensors and even electrochromic glass that adjusts tint automatically. Some manufacturers are also exploring windscreen-integrated solar panels.”
Even a small chip can weaken the structural integrity of a windscreen, van de Merwe warns. It may seem cosmetic, but under pressure, like from a pothole or speed bump, that chip can suddenly spread and shatter the windscreen. He adds that South African law prohibits driving with a windscreen that impairs visibility. You can be fined or even fail a roadworthy test. Cracks larger than 150mm or within the driver's vision won’t pass a roadworthy.
TEPA’S top 8 windscreen tips:
1. Don’t blow hot air on a cold windscreen.
2. Avoid slamming doors with windows closed.
3. Fix chips early as they spread fast.
4. Park in shade where possible.
5. Use gentle wipers and top-up washer fluid.
6. If a chip is smaller than a 10c coin and not in the driver’s line of sight, a repair may be possible. Cracks or damage near the screen’s edge almost always require full replacement.
7. Always use an accredited glass fitment centre where SABS-approved glass is used and there are trained technicians doing the work.
8. ADAS cameras rely on precise angles. When the windscreen is replaced, the system must be recalibrated, otherwise it can misread distances or lane markings leading to increased crash risk for drivers and possible liability claims for insurers.
Many people don’t realise that good quality automotive glass manufacturers whose products carry global standard markings (“E” - European Standards, “DOT” - department of transport USA and “CCC”- Chinese standard) are in many cases the same manufacturers who produce the glass for the Original Equipment Manufacturers, just without the actual brand logos on the glass due to copyright.
What’s important is that a lot rides on the integrity of your windscreen. Incorrect fitment, poor-quality glass and a lack of calibration could render all the safety tech in your vehicle useless. So, the next time you see a small chip, remember your life may depend on how - and by whom - it is repaired. Take 30 seconds to do a quick windscreen inspection every time you fuel up. It’s more than worth it.”
TEPA is a proud association of the Retail Motor Industry Organisation (RMI).
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